X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FMemory.c;h=8c4674b59651549f8cb5a1a357edd2921e01cbe0;hb=HEAD;hp=32b25ca6e6139e4a68a3d654b4f18c50d1da114e;hpb=d9153729685381acb0559d8a4fdca47cb839427a;p=picodrive.git

diff --git a/Pico/Memory.c b/Pico/Memory.c
deleted file mode 100644
index 32b25ca..0000000
--- a/Pico/Memory.c
+++ /dev/null
@@ -1,661 +0,0 @@
-// This is part of Pico Library
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
-
-//#define __debug_io
-
-#include "PicoInt.h"
-
-#include "sound/sound.h"
-#include "sound/ym2612.h"
-#include "sound/sn76496.h"
-
-typedef unsigned char  u8;
-typedef unsigned short u16;
-typedef unsigned int   u32;
-
-extern unsigned int lastSSRamWrite; // used by serial SRAM code
-
-#ifdef _ASM_MEMORY_C
-u8   PicoRead8(u32 a);
-u16  PicoRead16(u32 a);
-void PicoWriteRomHW_SSF2(u32 a,u32 d);
-void PicoWriteRomHW_in1 (u32 a,u32 d);
-#endif
-
-
-#if defined(EMU_C68K) && defined(EMU_M68K)
-// cyclone debug mode
-u32 lastread_a, lastread_d[16]={0,}, lastwrite_cyc_d[16]={0,}, lastwrite_mus_d[16]={0,};
-int lrp_cyc=0, lrp_mus=0, lwp_cyc=0, lwp_mus=0;
-extern unsigned int ppop;
-#endif
-
-#if defined(EMU_C68K) || defined(EMU_A68K)
-static __inline int PicoMemBase(u32 pc)
-{
-  int membase=0;
-
-  if (pc<Pico.romsize+4)
-  {
-    membase=(int)Pico.rom; // Program Counter in Rom
-  }
-  else if ((pc&0xe00000)==0xe00000)
-  {
-    membase=(int)Pico.ram-(pc&0xff0000); // Program Counter in Ram
-  }
-  else
-  {
-    // Error - Program Counter is invalid
-    membase=(int)Pico.rom;
-  }
-
-  return membase;
-}
-#endif
-
-
-#ifdef EMU_A68K
-extern u8 *OP_ROM=NULL,*OP_RAM=NULL;
-#endif
-
-static u32 CPU_CALL PicoCheckPc(u32 pc)
-{
-  u32 ret=0;
-#if defined(EMU_C68K)
-  pc-=PicoCpu.membase; // Get real pc
-  pc&=0xfffffe;
-
-  PicoCpu.membase=PicoMemBase(pc);
-
-  ret = PicoCpu.membase+pc;
-#elif defined(EMU_A68K)
-  OP_ROM=(u8 *)PicoMemBase(pc);
-
-  // don't bother calling us back unless it's outside the 64k segment
-  M68000_regs.AsmBank=(pc>>16);
-#endif
-  return ret;
-}
-
-
-int PicoInitPc(u32 pc)
-{
-  PicoCheckPc(pc);
-  return 0;
-}
-
-#ifndef _ASM_MEMORY_C
-void PicoMemReset()
-{
-}
-#endif
-
-// -----------------------------------------------------------------
-
-#ifndef _ASM_MEMORY_C
-// address must already be checked
-static int SRAMRead(u32 a)
-{
-  u8 *d = SRam.data-SRam.start+a;
-  return (d[0]<<8)|d[1];
-}
-#endif
-
-
-// for nonstandard reads
-#ifndef _ASM_MEMORY_C
-static
-#endif
-u32 OtherRead16End(u32 a, int realsize)
-{
-  u32 d=0;
-
-  dprintf("strange r%i: %06x @%06x", realsize, a&0xffffff, SekPc);
-
-  // for games with simple protection devices, discovered by Haze
-  // some dumb detection is used, but that should be enough to make things work
-  if ((a>>22) == 1 && Pico.romsize >= 512*1024) {
-    if      (*(int *)(Pico.rom+0x123e4) == 0x00550c39 && *(int *)(Pico.rom+0x123e8) == 0x00000040) { // Super Bubble Bobble (Unl) [!]
-      if      (a == 0x400000) { d=0x55<<8; goto end; }
-      else if (a == 0x400002) { d=0x0f<<8; goto end; }
-    }
-    else if (*(int *)(Pico.rom+0x008c4) == 0x66240055 && *(int *)(Pico.rom+0x008c8) == 0x00404df9) { // Smart Mouse (Unl)
-      if      (a == 0x400000) { d=0x55<<8; goto end; }
-      else if (a == 0x400002) { d=0x0f<<8; goto end; }
-      else if (a == 0x400004) { d=0xaa<<8; goto end; }
-      else if (a == 0x400006) { d=0xf0<<8; goto end; }
-    }
-    else if (*(int *)(Pico.rom+0x00404) == 0x00a90600 && *(int *)(Pico.rom+0x00408) == 0x6708b013) { // King of Fighters '98, The (Unl) [!]
-      if      (a == 0x480000 || a == 0x4800e0 || a == 0x4824a0 || a == 0x488880) { d=0xaa<<8; goto end; }
-      else if (a == 0x4a8820) { d=0x0a<<8; goto end; }
-      // there is also a read @ 0x4F8820 which needs 0, but that is returned in default case
-    }
-    else if (*(int *)(Pico.rom+0x01b24) == 0x004013f9 && *(int *)(Pico.rom+0x01b28) == 0x00ff0000) { // Mahjong Lover (Unl) [!]
-      if      (a == 0x400000) { d=0x90<<8; goto end; }
-      else if (a == 0x401000) { d=0xd3<<8; goto end; } // this one doesn't seem to be needed, the code does 2 comparisons and only then
-                                                       // checks the result, which is of the above one. Left it just in case.
-    }
-    else if (*(int *)(Pico.rom+0x05254) == 0x0c3962d0 && *(int *)(Pico.rom+0x05258) == 0x00400055) { // Elf Wor (Unl)
-      if      (a == 0x400000) { d=0x55<<8; goto end; }
-      else if (a == 0x400004) { d=0xc9<<8; goto end; } // this check is done if the above one fails
-      else if (a == 0x400002) { d=0x0f<<8; goto end; }
-      else if (a == 0x400006) { d=0x18<<8; goto end; } // similar to above
-    }
-    // our default behaviour is to return whatever was last written a 0x400000-0x7fffff range (used by Squirrel King (R) [!])
-    // Lion King II, The (Unl) [!]  writes @ 400000 and wants to get that val @ 400002 and wites another val
-    // @ 400004 which is expected @ 400006, so we really remember 2 values here
-    d = Pico.m.prot_bytes[(a>>2)&1]<<8;
-  }
-  else if (a == 0xa13000 && Pico.romsize >= 1024*1024) {
-    if      (*(int *)(Pico.rom+0xc8af0) == 0x30133013 && *(int *)(Pico.rom+0xc8af4) == 0x000f0240) { // Rockman X3 (Unl) [!]
-      d=0x0c; goto end;
-    }
-    else if (*(int *)(Pico.rom+0x28888) == 0x07fc0000 && *(int *)(Pico.rom+0x2888c) == 0x4eb94e75) { // Bug's Life, A (Unl) [!]
-      d=0x28; goto end; // does the check from RAM
-    }
-    else if (*(int *)(Pico.rom+0xc8778) == 0x30133013 && *(int *)(Pico.rom+0xc877c) == 0x000f0240) { // Super Mario Bros. (Unl) [!]
-      d=0x0c; goto end; // seems to be the same code as in Rockman X3 (Unl) [!]
-    }
-    else if (*(int *)(Pico.rom+0xf20ec) == 0x30143013 && *(int *)(Pico.rom+0xf20f0) == 0x000f0200) { // Super Mario 2 1998 (Unl) [!]
-      d=0x0a; goto end;
-    }
-  }
-  else if (a == 0xa13002) { // Pocket Monsters (Unl)
-    d=0x01; goto end;
-  }
-  else if (a == 0xa1303E) { // Pocket Monsters (Unl)
-    d=0x1f; goto end;
-  }
-  else if (a == 0x30fe02) {
-    // Virtua Racing - just for fun
-    // this seems to be some flag that SVP is ready or something similar
-    d=1; goto end;
-  }
-
-end:
-  dprintf("ret = %04x", d);
-  return d;
-}
-
-
-//extern UINT32 mz80GetRegisterValue(void *, UINT32);
-
-static void OtherWrite8End(u32 a,u32 d,int realsize)
-{
-  // sram
-  //if(a==0x200000) dprintf("cc : %02x @ %06x [%i|%i]", d, SekPc, SekCyclesDoneT(), SekCyclesDone());
-  //if(a==0x200001) dprintf("w8 : %02x @ %06x [%i]", d, SekPc, SekCyclesDoneT());
-  if(a >= SRam.start && a <= SRam.end) {
-    unsigned int sreg = Pico.m.sram_reg;
-    if(!(sreg & 0x10)) {
-      // not detected SRAM
-      if((a&~1)==0x200000) {
-        Pico.m.sram_reg|=4; // this should be a game with EEPROM (like NBA Jam)
-        SRam.start=0x200000; SRam.end=SRam.start+1;
-      }
-      Pico.m.sram_reg|=0x10;
-    }
-    if(sreg & 4) { // EEPROM write
-      if(SekCyclesDoneT()-lastSSRamWrite < 46) {
-        // just update pending state
-        SRAMUpdPending(a, d);
-      } else {
-        SRAMWriteEEPROM(sreg>>6); // execute pending
-        SRAMUpdPending(a, d);
-        lastSSRamWrite = SekCyclesDoneT();
-      }
-    } else if(!(sreg & 2)) {
-      u8 *pm=(u8 *)(SRam.data-SRam.start+a);
-      if(*pm != (u8)d) {
-        SRam.changed = 1;
-        *pm=(u8)d;
-      }
-    }
-    return;
-  }
-
-#ifdef _ASM_MEMORY_C
-  // special ROM hardware (currently only banking and sram reg supported)
-  if((a&0xfffff1) == 0xA130F1) {
-    PicoWriteRomHW_SSF2(a, d); // SSF2 or SRAM
-    return;
-  }
-#else
-  // sram access register
-  if(a == 0xA130F1) {
-    Pico.m.sram_reg = (u8)(d&3);
-    return;
-  }
-#endif
-  dprintf("strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);
-
-  if(a >= 0xA13004 && a < 0xA13040) {
-    // dumb 12-in-1 or 4-in-1 banking support
-    int len;
-    a &= 0x3f; a <<= 16;
-    len = Pico.romsize - a;
-    if (len <= 0) return; // invalid/missing bank
-    if (len > 0x200000) len = 0x200000; // 2 megs
-    memcpy(Pico.rom, Pico.rom+a, len); // code which does this is in RAM so this is safe.
-    return;
-  }
-
-  // for games with simple protection devices, discovered by Haze
-  else if ((a>>22) == 1)
-    Pico.m.prot_bytes[(a>>2)&1] = (u8)d;
-}
-
-
-#include "MemoryCmn.c"
-
-
-// -----------------------------------------------------------------
-//                     Read Rom and read Ram
-
-#ifndef _ASM_MEMORY_C
-u8 CPU_CALL PicoRead8(u32 a)
-{
-  u32 d=0;
-
-  if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram
-
-  a&=0xffffff;
-
-#if !(defined(EMU_C68K) && defined(EMU_M68K))
-  // sram
-  if(a >= SRam.start && a <= SRam.end) {
-    unsigned int sreg = Pico.m.sram_reg;
-    if(!(sreg & 0x10) && (sreg & 1) && a > 0x200001) { // not yet detected SRAM
-      Pico.m.sram_reg|=0x10; // should be normal SRAM
-    }
-    if(sreg & 4) { // EEPROM read
-      d = SRAMReadEEPROM();
-      goto end;
-    } else if(sreg & 1) {
-      d = *(u8 *)(SRam.data-SRam.start+a);
-      goto end;
-    }
-  }
-#endif
-
-  if (a<Pico.romsize) { d = *(u8 *)(Pico.rom+(a^1)); goto end; } // Rom
-  if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram
-
-  d=OtherRead16(a&~1, 8); if ((a&1)==0) d>>=8;
-
-  end:
-
-  //if ((a&0xe0ffff)==0xe0AE57+0x69c)
-  //  dprintf("r8 : %06x,   %02x @%06x", a&0xffffff, (u8)d, SekPc);
-  //if ((a&0xe0ffff)==0xe0a9ba+0x69c)
-  //  dprintf("r8 : %06x,   %02x @%06x", a&0xffffff, d, SekPc);
-
-  //if(a==0x200001) dprintf("r8 : %02x @ %06x [%i]", d, SekPc, SekCyclesDoneT());
-  //dprintf("r8 : %06x,   %02x @%06x [%03i]", a&0xffffff, (u8)d, SekPc, Pico.m.scanline);
-#ifdef __debug_io
-  dprintf("r8 : %06x,   %02x @%06x", a&0xffffff, (u8)d, SekPc);
-#endif
-#if defined(EMU_C68K) && defined(EMU_M68K)
-  if(a>=Pico.romsize&&(ppop&0x3f)!=0x3a&&(ppop&0x3f)!=0x3b) {
-    lastread_a = a;
-    lastread_d[lrp_cyc++&15] = (u8)d;
-  }
-#endif
-  return (u8)d;
-}
-
-u16 CPU_CALL PicoRead16(u32 a)
-{
-  u16 d=0;
-
-  if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram
-
-  a&=0xfffffe;
-
-#if !(defined(EMU_C68K) && defined(EMU_M68K))
-  // sram
-  if(a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg & 1)) {
-    d = (u16) SRAMRead(a);
-    goto end;
-  }
-#endif
-
-  if (a<Pico.romsize) { d = *(u16 *)(Pico.rom+a); goto end; } // Rom
-
-  d = (u16)OtherRead16(a, 16);
-
-  end:
-  //if ((a&0xe0ffff)==0xe0AF0E+0x69c||(a&0xe0ffff)==0xe0A9A8+0x69c||(a&0xe0ffff)==0xe0A9AA+0x69c||(a&0xe0ffff)==0xe0A9AC+0x69c)
-  //  dprintf("r16: %06x, %04x  @%06x", a&0xffffff, d, SekPc);
-
-#ifdef __debug_io
-  dprintf("r16: %06x, %04x  @%06x", a&0xffffff, d, SekPc);
-#endif
-#if defined(EMU_C68K) && defined(EMU_M68K)
-  if(a>=Pico.romsize&&(ppop&0x3f)!=0x3a&&(ppop&0x3f)!=0x3b) {
-    lastread_a = a;
-    lastread_d[lrp_cyc++&15] = d;
-  }
-#endif
-  return d;
-}
-
-u32 CPU_CALL PicoRead32(u32 a)
-{
-  u32 d=0;
-
-  if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram
-
-  a&=0xfffffe;
-
-  // sram
-  if(a >= SRam.start && a <= SRam.end && (Pico.m.sram_reg & 1)) {
-    d = (SRAMRead(a)<<16)|SRAMRead(a+2);
-    goto end;
-  }
-
-  if (a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+a); d = (pm[0]<<16)|pm[1]; goto end; } // Rom
-
-  d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);
-
-  end:
-#ifdef __debug_io
-  dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);
-#endif
-#if defined(EMU_C68K) && defined(EMU_M68K)
-  if(a>=Pico.romsize&&(ppop&0x3f)!=0x3a&&(ppop&0x3f)!=0x3b) {
-    lastread_a = a;
-    lastread_d[lrp_cyc++&15] = d;
-  }
-#endif
-  return d;
-}
-#endif
-
-// -----------------------------------------------------------------
-//                            Write Ram
-
-static void CPU_CALL PicoWrite8(u32 a,u8 d)
-{
-#ifdef __debug_io
-  dprintf("w8 : %06x,   %02x @%06x", a&0xffffff, d, SekPc);
-#endif
-#if defined(EMU_C68K) && defined(EMU_M68K)
-  lastwrite_cyc_d[lwp_cyc++&15] = d;
-#endif
-  //if ((a&0xe0ffff)==0xe0a9ba+0x69c)
-  //  dprintf("w8 : %06x,   %02x @%06x", a&0xffffff, d, SekPc);
-
-  if ((a&0xe00000)==0xe00000) { *(u8 *)(Pico.ram+((a^1)&0xffff))=d; return; } // Ram
-
-  a&=0xffffff;
-  OtherWrite8(a,d,8);
-}
-
-void CPU_CALL PicoWrite16(u32 a,u16 d)
-{
-#ifdef __debug_io
-  dprintf("w16: %06x, %04x", a&0xffffff, d);
-#endif
-#if defined(EMU_C68K) && defined(EMU_M68K)
-  lastwrite_cyc_d[lwp_cyc++&15] = d;
-#endif
-  //if ((a&0xe0ffff)==0xe0AF0E+0x69c||(a&0xe0ffff)==0xe0A9A8+0x69c||(a&0xe0ffff)==0xe0A9AA+0x69c||(a&0xe0ffff)==0xe0A9AC+0x69c)
-  //  dprintf("w16: %06x, %04x  @%06x", a&0xffffff, d, SekPc);
-
-  if ((a&0xe00000)==0xe00000) { *(u16 *)(Pico.ram+(a&0xfffe))=d; return; } // Ram
-
-  a&=0xfffffe;
-  OtherWrite16(a,d);
-}
-
-static void CPU_CALL PicoWrite32(u32 a,u32 d)
-{
-#ifdef __debug_io
-  dprintf("w32: %06x, %08x", a&0xffffff, d);
-#endif
-#if defined(EMU_C68K) && defined(EMU_M68K)
-  lastwrite_cyc_d[lwp_cyc++&15] = d;
-#endif
-
-  if ((a&0xe00000)==0xe00000)
-  {
-    // Ram:
-    u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));
-    pm[0]=(u16)(d>>16); pm[1]=(u16)d;
-    return;
-  }
-
-  a&=0xfffffe;
-  OtherWrite16(a,  (u16)(d>>16));
-  OtherWrite16(a+2,(u16)d);
-}
-
-
-// -----------------------------------------------------------------
-void PicoMemSetup()
-{
-#ifdef EMU_C68K
-  // Setup memory callbacks:
-  PicoCpu.checkpc=PicoCheckPc;
-  PicoCpu.fetch8 =PicoCpu.read8 =PicoRead8;
-  PicoCpu.fetch16=PicoCpu.read16=PicoRead16;
-  PicoCpu.fetch32=PicoCpu.read32=PicoRead32;
-  PicoCpu.write8 =PicoWrite8;
-  PicoCpu.write16=PicoWrite16;
-  PicoCpu.write32=PicoWrite32;
-#endif
-}
-
-#ifdef EMU_A68K
-struct A68KInter
-{
-  u32 unknown;
-  u8  (__fastcall *Read8) (u32 a);
-  u16 (__fastcall *Read16)(u32 a);
-  u32 (__fastcall *Read32)(u32 a);
-  void (__fastcall *Write8)  (u32 a,u8 d);
-  void (__fastcall *Write16) (u32 a,u16 d);
-  void (__fastcall *Write32) (u32 a,u32 d);
-  void (__fastcall *ChangePc)(u32 a);
-  u8  (__fastcall *PcRel8) (u32 a);
-  u16 (__fastcall *PcRel16)(u32 a);
-  u32 (__fastcall *PcRel32)(u32 a);
-  u16 (__fastcall *Dir16)(u32 a);
-  u32 (__fastcall *Dir32)(u32 a);
-};
-
-struct A68KInter a68k_memory_intf=
-{
-  0,
-  PicoRead8,
-  PicoRead16,
-  PicoRead32,
-  PicoWrite8,
-  PicoWrite16,
-  PicoWrite32,
-  PicoCheckPc,
-  PicoRead8,
-  PicoRead16,
-  PicoRead32,
-  PicoRead16, // unused
-  PicoRead32, // unused
-};
-#endif
-
-#ifdef EMU_M68K
-unsigned int  m68k_read_pcrelative_CD8 (unsigned int a);
-unsigned int  m68k_read_pcrelative_CD16(unsigned int a);
-unsigned int  m68k_read_pcrelative_CD32(unsigned int a);
-
-// these are allowed to access RAM
-unsigned int  m68k_read_pcrelative_8 (unsigned int a) {
-  a&=0xffffff;
-  if(PicoMCD&1) return m68k_read_pcrelative_CD8(a);
-  if(a<Pico.romsize)         return *(u8 *)(Pico.rom+(a^1)); // Rom
-  if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram
-  return 0;//(u8)  lastread_d;
-}
-unsigned int  m68k_read_pcrelative_16(unsigned int a) {
-  a&=0xffffff;
-  if(PicoMCD&1) return m68k_read_pcrelative_CD16(a);
-  if(a<Pico.romsize)         return *(u16 *)(Pico.rom+(a&~1)); // Rom
-  if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram
-  return 0;//(u16) lastread_d;
-}
-unsigned int  m68k_read_pcrelative_32(unsigned int a) {
-  a&=0xffffff;
-  if(PicoMCD&1) return m68k_read_pcrelative_CD32(a);
-  if(a<Pico.romsize)         { u16 *pm=(u16 *)(Pico.rom+(a&~1));     return (pm[0]<<16)|pm[1]; }
-  if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram
-  return 0;//lastread_d;
-}
-
-unsigned int m68k_read_immediate_16(unsigned int a)    { return m68k_read_pcrelative_16(a); }
-unsigned int m68k_read_immediate_32(unsigned int a)    { return m68k_read_pcrelative_32(a); }
-unsigned int m68k_read_disassembler_8 (unsigned int a) { return m68k_read_pcrelative_8 (a); }
-unsigned int m68k_read_disassembler_16(unsigned int a) { return m68k_read_pcrelative_16(a); }
-unsigned int m68k_read_disassembler_32(unsigned int a) { return m68k_read_pcrelative_32(a); }
-
-#ifdef EMU_C68K
-// ROM only
-unsigned int  m68k_read_memory_8(unsigned int a)  { if(a<Pico.romsize) return  *(u8 *) (Pico.rom+(a^1)); return (u8)  lastread_d[lrp_mus++&15]; }
-unsigned int  m68k_read_memory_16(unsigned int a) { if(a<Pico.romsize) return  *(u16 *)(Pico.rom+(a&~1));return (u16) lastread_d[lrp_mus++&15]; }
-unsigned int  m68k_read_memory_32(unsigned int a) { if(a<Pico.romsize) {u16 *pm=(u16 *)(Pico.rom+(a&~1));return (pm[0]<<16)|pm[1];} return lastread_d[lrp_mus++&15]; }
-
-// ignore writes, Cyclone already done that
-void m68k_write_memory_8(unsigned int address, unsigned int value)  { lastwrite_mus_d[lwp_mus++&15] = value; }
-void m68k_write_memory_16(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }
-void m68k_write_memory_32(unsigned int address, unsigned int value) { lastwrite_mus_d[lwp_mus++&15] = value; }
-#else
-unsigned char  PicoReadCD8w (unsigned int a);
-unsigned short PicoReadCD16w(unsigned int a);
-unsigned int   PicoReadCD32w(unsigned int a);
-void PicoWriteCD8w (unsigned int a, unsigned char d);
-void PicoWriteCD16w(unsigned int a, unsigned short d);
-void PicoWriteCD32w(unsigned int a, unsigned int d);
-
-unsigned int  m68k_read_memory_8(unsigned int address)
-{
-    return (PicoMCD&1) ? PicoReadCD8w(address)  : PicoRead8(address);
-}
-
-unsigned int  m68k_read_memory_16(unsigned int address)
-{
-    return (PicoMCD&1) ? PicoReadCD16w(address) : PicoRead16(address);
-}
-
-unsigned int  m68k_read_memory_32(unsigned int address)
-{
-    return (PicoMCD&1) ? PicoReadCD32w(address) : PicoRead32(address);
-}
-
-void m68k_write_memory_8(unsigned int address, unsigned int value)
-{
-    if (PicoMCD&1) PicoWriteCD8w(address, (u8)value); else PicoWrite8(address, (u8)value);
-}
-
-void m68k_write_memory_16(unsigned int address, unsigned int value)
-{
-    if (PicoMCD&1) PicoWriteCD16w(address,(u16)value); else PicoWrite16(address,(u16)value);
-}
-
-void m68k_write_memory_32(unsigned int address, unsigned int value)
-{
-    if (PicoMCD&1) PicoWriteCD32w(address, value); else PicoWrite32(address, value);
-}
-#endif
-#endif // EMU_M68K
-
-
-// -----------------------------------------------------------------
-//                        z80 memhandlers
-
-unsigned char z80_read(unsigned short a)
-{
-  u8 ret = 0;
-
-  if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)
-  {
-    if(PicoOpt&1) ret = (u8) YM2612Read();
-    goto end;
-  }
-
-  if (a>=0x8000)
-  {
-    u32 addr68k;
-    addr68k=Pico.m.z80_bank68k<<15;
-    addr68k+=a&0x7fff;
-
-    ret = (u8) PicoRead8(addr68k);
-    //dprintf("z80->68k w8 : %06x,   %02x", addr68k, ret);
-    goto end;
-  }
-
-  // should not be needed || dprintf("z80_read RAM");
-  if (a<0x4000) { ret = (u8) Pico.zram[a&0x1fff]; goto end; }
-
-end:
-  return ret;
-}
-
-unsigned short z80_read16(unsigned short a)
-{
-  //dprintf("z80_read16");
-
-  return (u16) ( (u16)z80_read(a) | ((u16)z80_read((u16)(a+1))<<8) );
-}
-
-void z80_write(unsigned char data, unsigned short a)
-{
-  //if (a<0x4000)
-  //  dprintf("z80 w8 : %06x,   %02x @%04x", a, data, mz80GetRegisterValue(NULL, 0));
-
-  if ((a>>13)==2) // 0x4000-0x5fff (Charles MacDonald)
-  {
-    if(PicoOpt&1) emustatus|=YM2612Write(a, data);
-    return;
-  }
-
-  if ((a&0xfff9)==0x7f11) // 7f11 7f13 7f15 7f17
-  {
-    if(PicoOpt&2) SN76496Write(data);
-    return;
-  }
-
-  if ((a>>8)==0x60)
-  {
-    Pico.m.z80_bank68k>>=1;
-    Pico.m.z80_bank68k|=(data&1)<<8;
-    Pico.m.z80_bank68k&=0x1ff; // 9 bits and filled in the new top one
-    return;
-  }
-
-  if (a>=0x8000)
-  {
-    u32 addr68k;
-    addr68k=Pico.m.z80_bank68k<<15;
-    addr68k+=a&0x7fff;
-    PicoWrite8(addr68k, data);
-    //dprintf("z80->68k w8 : %06x,   %02x", addr68k, data);
-    return;
-  }
-
-  // should not be needed, drZ80 knows how to access RAM itself || dprintf("z80_write RAM @ %08x", lr);
-  if (a<0x4000) { Pico.zram[a&0x1fff]=data; return; }
-}
-
-void z80_write16(unsigned short data, unsigned short a)
-{
-  //dprintf("z80_write16");
-
-  z80_write((unsigned char) data,a);
-  z80_write((unsigned char)(data>>8),(u16)(a+1));
-}
-